A.16 Liste des propriétés de contexte

If set to 'voice, accidentals
on the same note in different octaves may be horizontally staggered
if in different voices.

additionalPitchPrefix (string)

Text with which to prefix
additional pitches within a chord name.

aDueText (markup)

Text to print at a unisono passage.

alignAboveContext (string)

Where to insert newly created context in
vertical alignment.

alignBassFigureAccidentals (boolean)

If true, then the accidentals
are aligned in bass figure context.

alignBelowContext (string)

Where to insert newly created context in
vertical alignment.

alternativeNumberingStyle (symbol)

The style of an alternative’s bar
numbers. Can be numbers for going back to the same number or
numbers-with-letters for going back to the same number with letter
suffixes. No setting will not go back in measure-number time.

associatedVoice (string)

Name of the Voice that has the
melody for this Lyrics line.

autoAccidentals (list)

List of different ways to typeset an
accidental.

For determining when to print an accidental, several different rules
are tried. The rule that gives the highest number of accidentals is
used.

Each entry in the list is either a symbol or a procedure.

symbol

The symbol is the name of the context in which the following rules are to be
applied. For example, if context is Score then all
staves share accidentals, and if context is Staff then
all voices in the same staff share accidentals, but staves do not.

procedure

The procedure represents an accidental rule to be applied to the previously
specified context.

The procedure takes the following arguments:

context

The current context to which the rule should be applied.

pitch

The pitch of the note to be evaluated.

barnum

The current bar number.

measurepos

The current measure position.

The procedure returns a pair of booleans. The first states whether an extra
natural should be added. The second states whether an accidental should be
printed. (#t . #f) does not make sense.

autoBeamCheck (procedure)

A procedure taking three
arguments, context, dir [start/stop (-1 or 1)], and
test [shortest note in the beam]. A non-#f return value
starts or stops the auto beam.

autoBeaming (boolean)

If set to true then beams are generated
automatically.

autoCautionaries (list)

List similar to autoAccidentals,
but it controls cautionary accidentals rather than normal ones. Both
lists are tried, and the one giving the most accidentals wins. In
case of draw, a normal accidental is typeset.

automaticBars (boolean)

If set to false then bar lines will not
be printed automatically; they must be explicitly created with a
\bar command. Unlike the \cadenzaOn keyword, measures
are still counted. Bar line generation will resume according to that
count if this property is unset.

barAlways (boolean)

If set to true a bar line is drawn after
each note.

barCheckSynchronize (boolean)

If true then reset
measurePosition when finding a bar check.

barNumberFormatter (procedure)

A procedure that takes a bar
number, measure position, and alternative number and returns a markup
of the bar number to print.

barNumberVisibility (procedure)

A procedure that takes a bar
number and a measure position and returns whether the corresponding
bar number should be printed. Note that the actual print-out of
bar numbers is controlled with the break-visibility property.

The following procedures are predefined:

all-bar-numbers-visible

Enable bar numbers for all bars, including the first one and broken
bars (which get bar numbers in parentheses).

first-bar-number-invisible

Enable bar numbers for all bars (including broken bars) except the
first one. If the first bar is broken, it doesn’t get a bar number
either.

first-bar-number-invisible-save-broken-bars

Enable bar numbers for all bars (including broken bars) except the
first one. A broken first bar gets a bar number.

first-bar-number-invisible-and-no-parenthesized-bar-numbers

Enable bar numbers for all bars except the first bar and broken bars.
This is the default.

The layout style is a hash table, containing the drum-pitches (e.g.,
the symbol ‘hihat’) as keys, and a list
(notehead-stylescriptvertical-position) as
values.

endRepeatSegnoType (string)

Set the default bar line for the
combinations ending of repeat with segno. Default is ‘:|.S’.

endRepeatType (string)

Set the default bar line for the ending
of repeats.

explicitClefVisibility (vector)

‘break-visibility’
function for clef changes.

explicitCueClefVisibility (vector)

‘break-visibility’
function for cue clef changes.

explicitKeySignatureVisibility (vector)

‘break-visibility’
function for explicit key changes. ‘\override’ of the
break-visibility property will set the visibility for
normal (i.e., at the start of the line) key signatures.

extendersOverRests (boolean)

Whether to continue extenders as
they cross a rest.

extraNatural (boolean)

Whether to typeset an extra natural sign
before accidentals that reduce the effect of a previous alteration.

figuredBassAlterationDirection (direction)

Where to put alterations
relative to the main figure.

figuredBassCenterContinuations (boolean)

Whether to vertically
center pairs of extender lines. This does not work with three or more
lines.

figuredBassFormatter (procedure)

A routine generating a markup
for a bass figure.

figuredBassPlusDirection (direction)

Where to put plus signs
relative to the main figure.

fingeringOrientations (list)

A list of symbols, containing
‘left’, ‘right’, ‘up’ and/or ‘down’. This list
determines where fingerings are put relative to the chord being
fingered.

firstClef (boolean)

If true, create a new clef when starting a
staff.

followVoice (boolean)

If set, note heads are tracked across
staff switches by a thin line.

fontSize (number)

The relative size of all grobs in a context.

forbidBreak (boolean)

If set to #t, prevent a line break
at this point.

forceClef (boolean)

Show clef symbol, even if it has not
changed. Only active for the first clef after the property is set, not
for the full staff.

fretLabels (list)

A list of strings or Scheme-formatted markups
containing, in the correct order, the labels to be used for lettered
frets in tablature.

glissandoMap (list)

A map in the form of
’((source1 . target1) (source2 . target2) (sourcen . targetn))
showing the glissandi to be drawn for note columns.
The value ’() will default to
’((0 . 0) (1 . 1) (n . n)),
where n is the minimal number of note-heads in
the two note columns between which the glissandi occur.

gridInterval (moment)

Interval for which to generate
GridPoints.

handleNegativeFrets (symbol)

How the automatic fret calculator
should handle calculated negative frets. Values include 'ignore,
to leave them out of the diagram completely, 'include, to include
them as calculated, and 'recalculate, to ignore the specified
string and find a string where they will fit with a positive fret number.

harmonicAccidentals (boolean)

If set, harmonic notes in chords
get accidentals.

harmonicDots (boolean)

If set, harmonic notes in dotted chords get
dots.

highStringOne (boolean)

Whether the first string is the string
with highest pitch on the instrument. This used by the automatic
string selector for tablature notation.

A function taking a
string (instrument name), and returning a (min . max)
pair of numbers for the loudness range of the instrument.

instrumentName (markup)

The name to print left of a staff. The
instrumentName property labels the staff in the first system, and
the shortInstrumentName property labels following lines.

instrumentTransposition (pitch)

Define the transposition of
the instrument. Its value is the pitch that sounds when the instrument
plays written middle C. This is used to transpose the MIDI output,
and \quotes.

internalBarNumber (integer)

Contains the current barnumber.
This property is used for internal timekeeping, among others by the
Accidental_engraver.

keepAliveInterfaces (list)

A list of symbols, signifying grob
interfaces that are worth keeping a staff with remove-empty set
around for.

keyAlterationOrder (list)

An alist that defines in what order
alterations should be printed. The format is
(step . alter),
where step is a number from 0 to 6 and
alter from -2 (sharp) to 2 (flat).

keySignature (list)

The current key signature. This is an alist
containing (step . alter) or
((octave . step) . alter), where step
is a number in the range 0 to 6 and alter a fraction,
denoting alteration. For alterations, use symbols, e.g.
keySignature = #`((6 . ,FLAT)).

lyricMelismaAlignment (number)

Alignment to use for a melisma syllable.

majorSevenSymbol (markup)

How should the major 7th be formatted
in a chord name?

markFormatter (procedure)

A procedure taking as arguments the
context and the rehearsal mark. It should return the formatted mark as
a markup object.

maximumFretStretch (number)

Don’t allocate frets further than
this from specified frets.

measureLength (moment)

Length of one measure in the current
time signature.

measurePosition (moment)

How much of the current measure have
we had. This can be set manually to create incomplete measures.

melismaBusyProperties (list)

A list of properties (symbols) to
determine whether a melisma is playing. Setting this property will
influence how lyrics are aligned to notes. For example, if set to
'(melismaBusy beamMelismaBusy), only manual melismata and
manual beams are considered. Possible values include
melismaBusy, slurMelismaBusy, tieMelismaBusy, and
beamMelismaBusy.

metronomeMarkFormatter (procedure)

How to produce a metronome
markup. Called with two arguments: a TempoChangeEvent and context.

middleCClefPosition (number)

The position of the middle C,
as determined only by the clef. This can be calculated by looking at
clefPosition and clefGlyph.

middleCCuePosition (number)

The position of the middle C,
as determined only by the clef of the cue notes. This can be calculated by
looking at cueClefPosition and cueClefGlyph.

middleCOffset (number)

The offset of
middle C from the position given by middleCClefPosition This
is used for ottava brackets.

middleCPosition (number)

The place of the middle C, measured in
half staff-spaces. Usually determined by looking at
middleCClefPosition and middleCOffset.

midiBalance (number)

Stereo balance for the MIDI channel
associated with the current context. Ranges from -1 to 1,
where the values -1 (#LEFT), 0 (#CENTER)
and 1 (#RIGHT) correspond to leftmost emphasis, center
balance, and rightmost emphasis, respectively.

midiChannelMapping (symbol)

How to map MIDI channels: per
staff (default), instrument or voice.

midiChorusLevel (number)

Chorus effect level for the MIDI channel
associated with the current context. Ranges from 0 to 1
(0=off, 1=full effect).

midiInstrument (string)

Name of the MIDI instrument to use.

midiMaximumVolume (number)

Analogous to
midiMinimumVolume.

midiMergeUnisons (boolean)

If true, output only one MIDI note-on
event when notes with the same pitch, in the same MIDI-file track, overlap.

midiMinimumVolume (number)

Set the minimum loudness for MIDI.
Ranges from 0 to 1.

midiPanPosition (number)

Pan position for the MIDI channel
associated with the current context. Ranges from -1 to 1,
where the values -1 (#LEFT), 0 (#CENTER)
and 1 (#RIGHT) correspond to hard left, center, and hard
right, respectively.

midiReverbLevel (number)

Reverb effect level for the MIDI channel
associated with the current context. Ranges from 0 to 1
(0=off, 1=full effect).

minimumFret (number)

The tablature auto string-selecting
mechanism selects the highest string with a fret at least
minimumFret.

minimumPageTurnLength (moment)

Minimum length of a rest for a
page turn to be allowed.

minimumRepeatLengthForPageTurn (moment)

Minimum length of a
repeated section for a page turn to be allowed within that section.

minorChordModifier (markup)

Markup displayed following the root
for a minor chord

noChordSymbol (markup)

Markup to be displayed for rests in a
ChordNames context.

noteToFretFunction (procedure)

Convert list of notes and list of
defined strings to full list of strings and fret numbers.
Parameters: The context, a list of note events, a list of
tabstring events, and the fretboard grob if a fretboard is desired.

ottavation (markup)

If set, the text for an ottava spanner.
Changing this creates a new text spanner.

output (music output)

The output produced by a score-level
translator during music interpretation.

partCombineTextsOnNote (boolean)

Print part-combine texts only on
the next note rather than immediately on rests or skips.

pedalSostenutoStrings (list)

See pedalSustainStrings.

pedalSostenutoStyle (symbol)

See pedalSustainStyle.

pedalSustainStrings (list)

A list of strings to print for
sustain-pedal. Format is (upupdowndown),
where each of the three is the string to print when this is done with
the pedal.

pedalSustainStyle (symbol)

A symbol that indicates how to print
sustain pedals: text, bracket or mixed (both).

pedalUnaCordaStrings (list)

See pedalSustainStrings.

pedalUnaCordaStyle (symbol)

See pedalSustainStyle.

predefinedDiagramTable (hash table)

The hash table of predefined
fret diagrams to use in FretBoards.

printKeyCancellation (boolean)

Print restoration alterations
before a key signature change.

printOctaveNames (boolean)

Print octave marks for the
NoteNames context.

printPartCombineTexts (boolean)

Set ‘Solo’ and ‘A due’ texts
in the part combiner?

proportionalNotationDuration (moment)

Global override for
shortest-playing duration. This is used for switching on proportional
notation.

rehearsalMark (integer)

The last rehearsal mark printed.

repeatCommands (list)

This property is a list of commands
of the form (list 'volta x), where x is a string or
#f. 'end-repeat is also accepted as a command.

repeatCountVisibility (procedure)

A procedure taking as
arguments an integer and context, returning whether the corresponding
percent repeat number should be printed when countPercentRepeats
is set.

restCompletionBusy (boolean)

Signal whether a completion-rest is active.

restNumberThreshold (number)

If a multimeasure rest has more
measures than this, a number is printed.

restrainOpenStrings (boolean)

Exclude open strings from the
automatic fret calculator.

searchForVoice (boolean)

Signal whether a search should be made
of all contexts in the context hierarchy for a voice to provide rhythms
for the lyrics.

segnoType (string)

Set the default bar line for a requested segno.
Default is ‘S’.

shapeNoteStyles (vector)

Vector of symbols, listing style for
each note head relative to the tonic (qv.) of the scale.

shortInstrumentName (markup)

See instrumentName.

shortVocalName (markup)

Name of a vocal line, short version.

skipBars (boolean)

If set to true, then skip the empty bars
that are produced by multimeasure notes and rests. These bars will
not appear on the printed output. If not set (the default),
multimeasure notes and rests expand into their full length, printing
the appropriate number of empty bars so that synchronization with other
voices is preserved.

{
r1 r1*3 R1*3
\set Score.skipBars= ##t
r1*3 R1*3
}

skipTypesetting (boolean)

If true, no typesetting is done,
speeding up the interpretation phase. Useful for debugging large
scores.

slashChordSeparator (markup)

The markup object used to separate
a chord name from its root note in case of inversions or slash
chords.